Can't execute query

SELECT p.*,c.id as cid FROM knowledge_tw as p, knowledge_cate_tw c, knowledge_category_tw as it WHERE (p.id = '08441644' || p.serial_no = '08441644') AND p.id = it.pid AND it.category=c.id AND (p.available='1' or (p.available='0' and p.sdate <= '2018-08-15' AND p.edate >= '2018-08-15')) AND c.available = '1' AND it.category in (庭前小草無上寶) GROUP by it.pid

MySQL Error: Unknown column '庭前小草無上寶' in 'where clause'

This script cannot continue, terminating.